kc3-lang/libtommath

diff --git a/doc/bn.tex b/doc/bn.tex
index 5119901..6f1cb8c 100644
--- a/doc/bn.tex
+++ b/doc/bn.tex
@@ -2604,13 +2604,13 @@ macros is \texttt{false} or \texttt{true} respectively.
 \begin{alltt}
 bool mp_iseven(const mp_int *a)
 \end{alltt}
-Checks if $a = 0 mod 2$
+Checks if $a = 0 \;\mathrm{mod}\; 2$
 
 \index{mp\_isodd}
 \begin{alltt}
 bool mp_isodd(const mp_int *a)
 \end{alltt}
-Checks if $a = 1 mod 2$
+Checks if $a = 1 \;\mathrm{mod}\; 2$
 
 \index{mp\_isneg}
 \begin{alltt}